Which one of the following is a good conductor of electricity
[MP PMT 1994; AFMC 2002]
Diamond
Graphite
Silicon
Amorphous carbon
The total energy of a particle executing S.H.M. is proportional to
[CPMT 1974, 78; EAMCET 1994; RPET 1999;
MP PMT 2001; Pb. PMT 2002; MH CET 2002]
The bond order is maximum in
[AIIMS 1983, 85; CBSE PMT 1994; MP PET 2002]
When a semiconductor is heated, its resistance
[KCET 1992; MP PMT 1994; MP PET 1992, 2002;RPMT 2001; DCE 2001]
Vitamin B12 contains metal
[Bihar MEE 1997; RPET 1999; Pb. PMT 1999; AFMC 2002;
CBSE PMT 2003; CPMT 2003; MP PMT 2003]